Most Transmissible Omicron Subvariant, XBB.1.5, Accounts for 43 Percent of COVID Cases

Published on January 13, 2023

The fast-spreading omicron subvariant XBB.1.5 is estimated to account for 43% of the COVID-19 cases in the United States for the week ended Jan. 14, data from the Centers for Disease Control and Prevention showed on Friday. The subvariant accounted for about 30% of cases in…

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